Electrical attachment for hydrocarbon or other burners.



ELECTRICAL ATTACH! (No Model.)

Patented May I, I900. F; WILKE.

ENT FOR HYDROCARBON OR OTHER BURNERS.

(Application filed June 10, 1399.

INK/ENTER.

4% YWW Arm- ATES

FERDlNAND VVILKE, OF AKRON, OHIO,'ASSIGNOR F ON E-IIALF TO CHARLES A. LEY, OF SAME PLACE.

ELECTRICAL ATTACHMENT FOR HYDROCARBON OROTHER BURNERS.

SPECIFICATION forming part of Letters IPatent No. 648,543, dated May 1, 1900.

Application filed June 10,1899.

To all whom it may concern.-

Be it known that l, FERDINAND WILKE, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Electrical Attachments for Hydrocarbon or other Burners; and l do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same My invention relates to an electrical attachment to hydrocarbon-stoves and for like uses; and the object of the invention is to provide an attachment which will tell when the burner has gone out, so that danger from overflow of oil may be prevented.

Frequently in the use of hydrocarbon-burners,particularly in gaso1ene-burners,the wind or a sharp draft will blow out the flame, es-

- pecially if the flame be turned low, but the vapor and oil will continue to flow. This state of things often continues for some time, while all the time the burner is supposed to be at work. Then when the true condition is discovered and amatch is struck in the presence of the vapors which fill the atmosphere an explosion follows with all the direful consequences so repeatedly related in the col umns of our daily papers. It is the object of .my invention to reduce all danger'on this account to a minimum by the use of a very sensitive device which will ring an alarm practically as soon as the flame of the burner is extinguished or so soon thereafter that no material or dangerous flooding of oil can ensue.

In the drawings, Figure l is a plan view of the attachment operatively mounted on a stove. Figfz is an enlarged plan View, partly in section, of the attachment alone. Fig. 3 is a perspective view of part of the attachment with electrical connections shown in diaram. T b

To theseends the invention comprises a stove attachment consisting of a metallic and preferably segmental arm A, provided with a pivot or hinge projection a at its rear and having a handle-arm a at its front to control its position to or from the burner B. A pivotpin a on the stove-frame serves in this instance to support arm A. The arm A nas a re- Serial No. 720,001. (No model.)

cess at its top above the pivot projection a,ipto which is set an insulating or non-conducting piece 0, fixed to arm A and having a part in the pivot on pin a as plainly shown in Fig.

3. This non-conducting piece has an-olfset or shoulder c, projecting outward beyond the inner side of armA, and to said ofiset portion is secured the sensitive plate or blade D.

This blade is curved in a segment following porting and connecting post 3. The other wire 4 of the circuit connects with the meta lic arm A through post 6, and a switch 7 at any convenient point on the line or in the circuit serves to turn the current on or ofi. At its opposite end the blade D is free between a contact-point-8 in or on arm Aand a nonconducting bracket 9 on the end of the arm in position to serve as a stop to the blade opposite to point 8.- The blade is normally in contact with point 8, and if the switch 7 be closed the bell E will ring and continue to ring as long as these conditionslast or until the battery is exhausted. Hence the efiect of the heat on blade D is to curve it away from or outof contact with point 8, and

said'blade is constructed to have this effect.-

One way to do this is touse a soft and responsive metal, like-brass, for the blade proper and a steel-Wire rod 10, laid centrally on the said blade lengthwise. tive to the heat than the brass, and hence a very slight degree of heat comparatively will show itself on the .blade and cause it to curve away from the point 8, and it will remain away while the burneris in flame, even though I it be turned low. Evidently with this closedcircuit arrangement of the parts as their normal relation a switch ,for throwing the currentin and out isnecessary, and the current is not intended to be turned on until the burner is going nor to be used when the burner is out; but if it should be on it will at once tell the fact by ringing the bell, and this will be notice to open the switch. This makes strictly an emergency device in which there :00

can be no danger in or from itself as an article, but will prevent practically the only dan- The steel is less sensi- 85 2 castes v nor that can arise from accidental overiiovv or Waste of oil in anopen stove.

When the device is not used, it should be carried away from the burner, and the stove skirting is shown at 12 as slotted to allovv the handle to be moved sufiiciently for this purpose.

Obviously the device is not limited to hydrocarbon-burners in application and use and may be employed in any other connection "Where it may be found of practical service.

What I claim 'is- 1. The attachment substantially as described comprising a metallic arm, asensitive blade fixed through insulation to one end of said arm and an electrical-contact point between said parts at the other end, and a pivot on which the arm is free to swing, substantially as described.

2. A safety attachment for hydrocarbon burners and the like comprising an arm constructed at one endto be pivoted to swing" to and fro and having at its other end a contactpoint and an insulating-stop, and a blade sensitive to heat fixedto insulating material on the pivot end of said arm and having its free end between said contactpoint and the in sulating-stop, and electrical connections Witharm and blade, submechanism, substantially as described.

i. A gas or vapor burner;incombination with an. electrical attachment comprising an arm pivoted to swing horizontally to and from said burner and a blade on said arm constructed to close the circuit when cold and to open the circuit when. Warm, and electrical connec tions With the inner ends of said arm and blade, and a handle to swing said arm to and from the burner, substantially as described.

Witness my hand to the foregoing specification this 23d day of May, 1809.

FERDINAND WILKE. 

